code: def notify_order(self, order):
      if not order.alive():
          print(
              "{} {} {}@{}".format(
                  bt.num2date(order.executed.dt),
                  "buy" if order.isbuy() else "sell",
                  order.executed.size,
                  order.executed.price,
              )
          )
  
file_path: backtrader/samples/sigsmacross/sigsmacross.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import datetime
  import backtrader
label_desc: Use image node_id 1 for calling the SmaCross obj's underlying member method code with example usage: obj.notify_order(order) without return types